MacBook Pro macbook pro de 2012 perte de dd au démarrage?

Bloc de code:
Last login: Fri Dec  8 09:54:50 on console
MacBook-Pro-de-maxime-2:~ cltmtr$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Crucial Max             749.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *120.0 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:                 Apple_APFS Container disk2         119.8 GB   disk1s2

/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +119.8 GB   disk2
                                 Physical Store disk1s2
   1:                APFS Volume OCZ Max                 50.0 GB    disk2s1
   2:                APFS Volume Preboot                 19.6 MB    disk2s2
   3:                APFS Volume Recovery                518.1 MB   disk2s3
   4:                APFS Volume VM                      1.1 GB     disk2s4

MacBook-Pro-de-maxime-2:~ cltmtr$
 
Bloc de code:
Last login: Fri Dec  8 10:00:10 on ttys000
MacBook-Pro-de-maxime-2:~ cltmtr$ diskutil cs list
No CoreStorage logical volume groups found
MacBook-Pro-de-maxime-2:~ cltmtr$
 
Bloc de code:
Last login: Fri Dec  8 10:01:11 on ttys000
MacBook-Pro-de-maxime-2:~ cltmtr$ diskutil ap list
APFS Container (1 found)
|
+-- Container disk2 975A9560-053D-41E0-82C5-B31ECCB486E1
    ====================================================
    APFS Container Reference:     disk2
    Capacity Ceiling (Size):      119824367616 B (119.8 GB)
    Capacity In Use By Volumes:   53465133056 B (53.5 GB) (44.6% used)
    Capacity Available:           66359234560 B (66.4 GB) (55.4% free)
    |
    +-< Physical Store disk1s2 BDCF7EB2-8F82-4499-B661-98F2935724A4
    |   -----------------------------------------------------------
    |   APFS Physical Store Disk:   disk1s2
    |   Size:                       119824367616 B (119.8 GB)
    |
    +-> Volume disk2s1 1C47EC5A-04B4-303E-9DC3-5452284F800E
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk2s1 (No specific role)
    |   Name:                      OCZ Max (Case-insensitive)
    |   Mount Point:               /
    |   Capacity Consumed:         51727392768 B (51.7 GB)
    |   Encrypted:                 No
    |
    +-> Volume disk2s2 30830568-0329-401A-A8F7-DCB12B258612
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk2s2 (Preboot)
    |   Name:                      Preboot (Case-insensitive)
    |   Mount Point:               Not Mounted
    |   Capacity Consumed:         19595264 B (19.6 MB)
    |   Encrypted:                 No
    |
    +-> Volume disk2s3 91D54806-D0A6-4F2D-BDE1-39C9BA19F796
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk2s3 (Recovery)
    |   Name:                      Recovery (Case-insensitive)
    |   Mount Point:               Not Mounted
    |   Capacity Consumed:         518135808 B (518.1 MB)
    |   Encrypted:                 No
    |
    +-> Volume disk2s4 BA4B67FB-785D-437E-91C0-FB42AEFC705C
        ---------------------------------------------------
        APFS Volume Disk (Role):   disk2s4 (VM)
        Name:                      VM (Case-insensitive)
        Mount Point:               /private/var/vm
        Capacity Consumed:         1073762304 B (1.1 GB)
        Encrypted:                 No
MacBook-Pro-de-maxime-2:~ cltmtr$
 
je commence a comprendre mon cas...., l'arrivée de sierra
Dans HFS+, comme dans bien d’autres systèmes de fichiers, la copie de données entraine celles des blocs associés. Dans APFS, ce n’est pas le cas
 
tu penses que c'est cela qui a mis le bouzingua dans la gestion de mes disques?
et pourquoi ce ralentissement.....est-ce sierra high?